Seats: Description and Operation

Current is always applied from the DOME fuse to TERMINAL SYSB of the Power seat ECU, from DOOR fuse to TERMINAL +B of the Power seat ECU and from STOP fuse to TERMINAL 2 of the Stop Light SW.
When the Ignition SW is turned on, Current flows from ECU-IG fuse to TERMINAL IG of the Power seat ECU and from the GAUGE fuse to TERMINAL 4 of the A/T Indicator SW.

POWER SEAT OPERATION (DRIVER'S SEAT)
Current is always applied to TERMINAL SYSB and TERMINAL +B of the Power seat ECU so that the Power seat ECU is always ready to Operate.

When the Power seat Control SW is pushed to the front slide position side. a Signal is input into TERMINAL SLDF of the Power seat ECU, the ECU operates and the Current to TERMINAL +B of the Power seat ECU flows from TERMINAL SLD+ slot of the Power seat ECU -->TERMINAL 1 of the Power seat motor (For Driver's Seat Slide Control) -->TERMINAL 2 -->TERMINAL SLD- of the Power seat ECU -->TERMINAL GND --> GROUND, rotating the Power seat motor so that the seat slides forward while the Power seat control SW is being pressed.

To side the driver's seat to the rear, pushing the Power seat control SW to the REAR SLIDE position side, inputs a Signal to TERMINAL SLDR of the Power seat ECU. This causes the Current flowing from the ECU to the motor to flow from TERMINAL SLD- of the Power seat ECU --> TERMINAL 2 of the Power seat motor (for driver's seat slide control) -->TERMINAL 1 --> TERMINAL SLD+ of the Power seat ECU, flowing the reverse to front slide Operation and causing the motor to rotate in reverse, so that the driver's seat moves to the rear.

The movement to other positions occurs similarly, so only the flow of Current to each motor is shown:

FRONT VERTICAL CONTROL UP OPERATION
TERMINAL +B of the Power seat ECU --> TERMINAL FRV+ --> TERMINAL 2 of the Power seat motor --> TERMINAL 1 -->TERMINAL FRV- of the ECU --> TERMINAL GND --> GROUND.

FRONT VERTICAL CONTROL DOWN OPERATION
TERMINAL +B of the Power seat ECU --> TERMINAL FRV- --> TERMINAL 1 of the Power seat motor --> TERMINAL 2 -->TERMINAL FRV+ of the ECU --> TERMINAL GND --> GROUND.

REAR VERTICAL CONTROL UP OPERATION
TERMINAL +B of the Power seat ECU --> TERMINAL RRV+ --> TERMINAL 2 of the Power seat motor --> TERMINAL 1 -->TERMINAL RRV- of the ECU --> TERMINAL GND --> GROUND.

REAR VERTICAL CONTROL DOWN OPERATION
TERMINAL +B of the Power seat ECU --> TERMINAL RRV- TERMINAL 1 of the Power seat motor --> TERMINAL 2 -->TERMINAL RRV+ of the ECU --> TERMINAL GND --> GROUND.

LUMBAR SUPPORT CONTROL FRONT OPERATION
TERMINAL 7 of the Power seat control SW --> TERMINAL 4 of lumbar support SW --> TERMINAL 1 --> TERMINAL 11 of the Power seat control SW -->TERMINAL 1 of the Power seat motor --> TERMINAL 2 --> TERMINAL 10 of the Power seat control SW --> TERMINAL 2 of the lumbar support SW --> TERMINAL 3 --> TERMINAL 12 of the Power seat control SW -->GROUND.

LUMBAR SUPPORT CONTROL REAR OPERATION
TERMINAL 7 of the Power seat control SW --> TERMINAL 4 of lumbar support SW -->TERMINAL 2 --> TERMINAL 10 of the Power seat control SW -->TERMINAL 2 of the Power seat motor --> TERMINAL 1 --> TERMINAL 11 of the Power seat control SW --> TERMINAL 1 of the lumbar support SW --> TERMINAL 3 --> TERMINAL 12 of the Power seat control SW -->GROUND.

The number of turns of each motor (amount of movement of each part of the seat) is detected by the position sensors and input to the ECU, making it possible to perform memory and return functions for the seat position using the driving position memory and return SW.

POWER WALK-IN OPERATION (PASSENGERS SEAT)
Walk-in Operation
When the Walk-in Pedal is depressed or the reclining handle is lifted up, the seat back reclines fully forward and reclining limit SW ON.1 operates. So a signal is input to TERMINAL RFSW of the power seat ECU --> TERMINAL SLD+ --> TERMINAL 2 of the power seat motor (for passenger's seat slide control) --> MOTOR --> TERMINAL 1 --> TERMINAL SLD- of the ECU --> TERMINAL GND --> GROUND. This causes the seat to slide forward 100 mm in the walk-in mode. However, when the initial slide position is 100 mm or less from the most fore position, the seat can only slide forward as far as the most fore position.

RETURN OPERATION
When the seat back is raised up from the Walk-in Position and returned to the upright lock position, reclining limit SW NO.1 operates and a signal is input to TERMINAL RRSW of the power seat ECU --> TERMINAL SLD- --> TERMINAL 1 of the power seat motor (for passenger's seat slide control) -->TERMINAL 2 --> TERMINAL SLD+ of the ECU --> TERMINAL GND --> GROUND.This causes the seat to slide back to a position 120 mm from the most rear position, completing return operation.

However, if the seat is positioned within 120 mm of the most rear position, return operation dose not occur, thus maintaining sufficient space for the rear seat passenger.